Potential of Probiotic Lactobacillus plantarum 2621 for the Management of Infertility
Praveen Bhandari, Praveen Rishi, Vijay Prabha
Microbiology Research Journal International · pp. 1585–1596 · Published 23 Aug 2014
10.9734/BMRJ/2014/12129Abstract
Background: Infertility outcomes may be associated with the infections that would lead to morphological defects of spermatozoa in vitro. The purpose of this work was to investigate the effect of Lactobacillus plantarum 2621 (L. plantarum) on adherence of sperm agglutinating Escherichia coli (E. coli) in vitro and in vivo as well as its effect on fertility outcome. Materials and Methods: Interference of E. coli adherence to vaginal epithelial cells (VECs) by L. plantarum was studied by carrying out different assays such as exclusion, competition and displacement. Further, in vivo study was carried out in mouse model to evaluate the effect of presence of L. plantarum against E. coli and its effect on fertility outcome by administering intravaginally at one hour interval between L. plantarum (108c.f.u./20µl) and different concentrations of E. coli (102,104, and 106 c.f.u/20 µl) for ten consecutive days. Results: 116•8 bacteria/VEC adhesion levels were observed for L. plantarum 2621 whereas values for E. coli were 60•5 bacteria/VEC. L. plantarum interfered to different extents with the adherence of E. coli. L. plantarum 2621 decreased the adhesion by displacement and competition in a significant level (90.3% and 68.5% of inhibition). L. plantarum 2621 also excluded the E. coli attached to VEC (25.8% of inhibition).Upon mating and completion of gestation period 100% fertility was observed with 108c.f.u./20µl L. plantarum and 102 c.f.u/20µl E. coli, whereas 100% females were infertile when administered with 106 c.f.u/20µl of E. coli alongwith 108c.f.u./20µl L. plantarum and only 50% fertility outcome was observed with 104 c.f.u/20µl E. coli. Conclusion: Results indicated that L. plantarum displaces colonization of E. coli and endows competition that resulted in reinforcement of natural microflora and affects fertility outcome depending on the presence and count of E. coli.
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